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Interior Angles and Exterior Angles of Polygons
Interior Angles and Exterior Angles of Polygons
4.2
Interior Angles and Exterior Angles of Polygons
Interior angle
It is an angle that is shaped by two adjacent sides of a polygon.
Angle
\(a, b, \)
and
\(c\)
are interior angles.
Interior angle
\(= \dfrac{(n-2) \times 180^{\circ}}{n}\)
Total sum of interior angles
\(= (n-2) \times 180^{\circ} \)
Exterior angle
It is an angle that is formed when one side of the polygon is extended.
It is also known as a complement to an interior angle of the polygon.
Exterior angle
\(= \dfrac{360^{\circ}}{n}\)
Total sum of exterior angles
\(= 360^{\circ} \)
Interior Angles and Exterior Angles of Polygons
4.2
Interior Angles and Exterior Angles of Polygons
Interior angle
It is an angle that is shaped by two adjacent sides of a polygon.
Angle
\(a, b, \)
and
\(c\)
are interior angles.
Interior angle
\(= \dfrac{(n-2) \times 180^{\circ}}{n}\)
Total sum of interior angles
\(= (n-2) \times 180^{\circ} \)
Exterior angle
It is an angle that is formed when one side of the polygon is extended.
It is also known as a complement to an interior angle of the polygon.
Exterior angle
\(= \dfrac{360^{\circ}}{n}\)
Total sum of exterior angles
\(= 360^{\circ} \)
Chapter : Polygons
Topic : Interior Angles and Exterior Angles of Polygons
Form 2
Mathematics
View all notes for Mathematics Form 2
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